1991 Johnson/Evinrude EI Outboards 2.3 thru 8 Service Manual, Page 218Get this manual
Disassembly 1Remove four water pump screwsfJl 2Slide water pump housing up and off driveshaftRemove impeller drive keytwo gasketsand water pump plate 19l 3
Remove three gearcase cover screws and remove the coverDiscard the gearcase cover gasket
4Slide the shift rod and driveshaft straight up and out of the gearcase5Remove the two gearcase head screws6Tap lightly on the ears of the gearcase head using wooden dowel and mallet until the gearcase head has rotated 10 or 15 in either direction